Vacuum jar and means for sealing it



Aug. 31, 1926.

G. STAUNTON VACUUM JAR AND MEANS FOR SEALING IT Filed July 2, 1925 Patented Aug. 31, 1926. 1

UNITED STATES PATENT OFFICE.

GRAY STAUNTON, OF NEW HAVEN, CONNECTICUT, ASSIGNO R TO VACUUM SEAL COM- IPANY, INC., OF NEW YORK, N. Y., A CORPORATION 01 NEW YORK.

VACUUM J'AR AND MEANS FOR SEALING IT.

Application filed July 2, 1925. Serial No. 41,003.

The invention relates to preserving jars and means for exhausting the air and gas therefrom, whereby to prevent fermentation of the'jar contents and to seal the jar by the effect of atmosphere'ic pressure upon the closure, or cover to hold it firmly in place.

In contemplation of my invention the (en-- tire cover is used as a valve which'opens and closes in obedience to the exhausting impulses efiected bythe air pump.

The invention resides in the manner of supporting the pump upon'the perimeter of the jar. surrounding the jar opening, arranged to permit free and unobstructed movement of the closure valve while the pump is being operated and affording a substantial support for the pump.

Anotherfeature of the invention is the simple and efiicient means employed for breaking the vacuum and removing-the cover.

Another feature of the invention resides in the manner of attaching the rubber skirt to"'the pump so that it may be applied-with very little inconvenience;

Other and more specific objects and advantages of the invention will. become apparent to persons skilled in the art from a consideration of the following description when taken in conjunction with the drawings. wherein:

Figure 1 is an elevation of one of the jars with the pump attached thereto in the proper manner to exhaust the jar.

Figure 2 is an enlarged elevation, parts in section, showing in more detail some of the features of the jar closure and pump.

Figure 3 is a transverse section taken substantially on line III-III of Figure 2.

Figure 4 is a top view of the jar cover or valve.

Figure 5 is a broken away section of parts of the jar. the sealing ring. the cover, and showing the manner of breaking the seal.

In all the views the same reference characters are employed to indicate similar parts.

On the drawing, the reference numeral is a jar having an inner circumferential rabbet 11, to receive a sealing ring 12. The valve or cover 13 is provided with a shoulder 14 to receive the sealing ring and is provided with an overlying annular flange 15 which overhangs thering and also overhangs, partly, or Wholly the upper "surface of the wall surroundingthe opening in the i Now it is manifest that if allof the air or gas in the jar has been pumped out. the cover 13 will beseated on thejar and the seal eflected bythe'ring 12 by outside atmospheric pressurei It'the jar cover and opening in the, jar be about three inches in diamet'erthe efi'cctive pressure-tem'ling to seat the cover 13 in its place equals about onehundred pounds so that the cover would be firmlyheld in "place-under all conditions of use" A pump cylinder 16 is provided with a reciprocating piston 17 operated by a bandle 18. An enlarged cup-shaped expanded terminal end 19 of the pump is sufficient to extend around the. jar and it is held to the pump barrel by a threaded nipple 20 and a nut 21. In the nipple20 is -a;valve 22.

A 'rubber skirt 23 extends around the outer surface of the cup-shaped member 19 and is held in place by a band 24. This band may be made of metal. such as tin or the like, and secured-'to o'n'e end of the band is an elongated eye '25. through which the other end-n26',= of"theband, passes and is turned back, as clearly shown in Figure 1. By this means the skirt 23 is held firmly to the cup shaped member 19.

The skirt 23 is very elastic and is preferably made of substantially pure rubber. It has been found in practice that the inner tube of an automobile tire serves the purpose when cut the proper length. As there are manv tubes of this character that become unfit for their initial use they make very good skirts for this purpose and are always available. The inner tubes of various diameters may easily be secured for jars of corresponding and varying diameters.

Around the rim 15 of the cmer 13 there are a plurality of notches 26. which divide the rim into three parts. These notches extend the depth of the rim 15. Extending inwardly from the cup-shaped member 19 of notches 26 and when the pump, is applied the supports 27 are seated on this part of jthe jar, the notches 26 permitting the entherefrom. When the air in the cup-shaped member 19 is attenuated the air from the jar will pass into this space and be pumped out by the pump; the valve will close after each reciprocation. The skirt 23 makes contact with the smooth outer surface of the jar, which is made smooth for this urpose, and provides a perfect seal. When the pump is about to be applied to thejar, the

skirt 23 is first rolled up over the edge of the cup-shaped member 19 whereupon the supports 27 are placed in the notches 26 and these supports rest upon the edge 28 of the jar, affording a good foundation for the pump. The skirt is then turned down and the handle pulled vertically a few reciprocations which action when completed in everyicase serves to tightly" and completely seal the jar. When this has been done the pump is then removed.

The entire jar and cover is made of glass and the packing rings are thoroughly sterilized before being placed in position, therefore, the jar is very sanitary and the fruit or other contents of the-jar is kept undefiled for a protracted len h of time.

After the jar has een sealed, in the maninsert an ordinary pin 30, back of the rubber ring 12 through one of the notches 26. This roduces an air opening around the pin permitting air to enter the jar and break the vacuum, whereupon the cover may then easily be lifted off the jar.

While I have hereinshown a single embodiment of my invention, for the purpose of clear disclosure, it will be manifest to persons skilled in the art that'considerable variation may be made from the specific details shown within the scope and sphere of the invention.

- Having described my invention, what I claim as-new and desire to secure by Letters Patent, is:.

1. In combination with a jar, havinga horizontal rim extending around its mouth, of a cover operatin as a valve, and having a peripheral radial an e adapted to rest on said rim, said flange aving a plurality of notches therein to receive sup orts for a pump for sealing the jar, said supports adapted to rest on said rim.

2. In combination with a jar, having a horizontal rim extending around its mouth, of a cover operating as a valve, and having a peripheral flange adapted to rest on said rim, said flange having a plurality of notches therein, and a pump having a base member with inwardly extending supports adapted to enter said notches,*respectively, and to rest upon the rim of the jar.

In testimony whereof I have hereunto subscribed my name.

GRAY STAUNTON. 

